After sex, the woman places a towel between her legs to keep the cum from dripping out, holding one end of the towel in front of her and the other behind her. She then proceeds to "gallop like seabiscuit", pretending the towel is a horse, to the restroom where she cleans up.

Me: So my girl and I just did it and afterwards she galloped to the bathroom like she was riding a horse.
Friend: So she was doing the Seabiscuit?

After sex, the woman places a towel between her legs to keep the cum from dripping out, holding one end of the towel in front of her and the other behind her. She then proceeds to "gallop like seabiscuit", pretending the towel is a horse, to the restroom where she cleans up.

Me: So my girl and I just did it and afterwards she galloped to the bathroom like she was riding a horse.
Friend: So she was doing the Seabiscuit?